Valve-testing device



April 28, 1925.

s. .3. BURNS mm: TESTING DEVICE im; July 25, 1922 v I ihxw-nloz 54/ 7 067. u. 50/77 6 Sn p Fatented Apr. 235,

SAMUEL J. BURNS, OF VINI'IA, OKLAHOMA.

VALVE-TESTING DEVICE.

Application filed July 25,

To all whom it may concern:

Be it known that I, SAMUEL J. BUnNs, a citizen of the United States, residing at Vinita, in the county of Craig and State of Oklahoma, have invented certain new and useful Improvements in a ValveTesting Device, of which the following is a specification.

The present invention relates to a valve testing device and has for its principal object to provide means for testing tire valves to ascertain whether or not the same are leaking.

Another important object of the invention is to provide a device of this nature which will be simple and eflicient in construction light in weight, compact, durable,

inexpensive to manufacture, and well adapted to the purpose for which it is designed.

With the above and numerous other objects in view the invention resides in certain novel features of construction as will be hereinafter more fully described and claimed.

In the drawing Figure 1 is a perspective showing the valve tester in conjunction with a tire valve, and

Figure 2 is a longitudinal section therethrough.

Referring to the drawing in detail it will be seen that a tube 1 is provided with an aperture closure 2 at one end while the other end thereof is open. A piston 3 is movable inside the tube 1 and is provided with a rod 4: that projects through the aperture in the closure 2. A pierced block 5 formed preferably of rubber is situated in the tube adjacent the closure 2 for frictionally engaging the rod lso as to oiler some resistance to its movement. Adjacent the open end of the tube 1 there is situated a block (5 of yiehlable material such as rubber pierced as at T. The blocks and 6 are forced into the tube 1 and in so doing they are compressed so as to frictionally engage the inner surface of the tube and thus will be prevented from accidental displacement.

At 8 I have shown a portion of an ordinary tire valve being provided with the stem 9. The tester is placed thereon as is indicated in Figure 2, the piston 3 having been pushed adjacent the open end of the tube and the yieldable block 6 resting upon 1922. Serial NO. 577,417.

the mouth of the valve 8. It will be seen that if there is any leakage through the valve it will cause the piston 3 to rise in the tube, likewise causing the rod at to rise. By having the yieldable block 6 the tester may be pressed tightly upon the mouth of the valve and prevent any leakage at the connection between the tester and the valve. The friction producing member 5 for the rod 4 prevents the same from raising suddenly and causes the same to move up gradually so that the amount of the leakage may be more readily ascertained by the user of the testing device.

It is thought that the construction and operation of the device will be readily understood without a more detailed description thereof. It is, however, desired to point out that the present embodiment of the invention has merely been disclosed by way of example and that numerous changes in the details of construction and in the combination and arrangement of parts may be resorted to without departing from the spirit of the invention as hereinafter claimed.

Having thus described my invention what I claim is 1. In combination, a tube having a pierced closure at one end and open at the other end, a yieldable pierced block at the open end of the tube adapted to be engaged with a tire valve, a piston in the tube, a rod extending from the piston through the pierced closure of the tube and friction means situated adjacent the pierced closure for engaging the rod to normallv hold it stationary in an adjusted position.

2. A device of the class described including a tube, a pierced block at one end of the tube formed of yieldable material and adapted to be engaged by a tire valve and a pierced block at the other end formed of frictional material, a piston in the tube, and a rod attached to the piston and. penetrating the pierced block of frictional material so that said block last mentioned frictionally engages the rod to hold it normally in a stationary position.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL J. BURNS.

Witnesses:

JOHN C. STARR, KATE G. CORNATZER. 

